Synthesis and Liquid crystal property of new  fluoro coumarin carboxylates

Mahadevana, Kittappa M; Harishkumar, Hosanagara N; Masagalli, Jagadeesh N; Srinivasa, H.T.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/5575

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DC Field	Value	Language
dc.contributor.author	Mahadevana, Kittappa M	-
dc.contributor.author	Harishkumar, Hosanagara N	-
dc.contributor.author	Masagalli, Jagadeesh N	-
dc.contributor.author	Srinivasa, H.T.	-
dc.date.accessioned	2013-05-13T06:39:46Z	-
dc.date.available	2013-05-13T06:39:46Z	-
dc.date.issued	2013-01-22	-
dc.identifier.citation	Molecular Crystals and Liquid Crystals, 2013, Vol.570, p20	en
dc.identifier.issn	1542-1406	-
dc.identifier.issn	1563-5287 (Online)	-
dc.identifier.uri	http://hdl.handle.net/2289/5575	-
dc.description	Restricted Access.	en
dc.description.abstract	New liquid crystalline 4-alkoxyphenyl-coumarin-3-carboxylates 6a–e, 7a–g, 8a–e, and 9a–e were prepared by reacting various coumarin-3-carboxylic acids 5a–d with 4-(alkoxy) phenols 4a–g in the presence of 1(3-dimethylaminopropyl-3-ethylcarbodiimide/dimethyl amino pyridine (EDCI/DMAP) as a coupling agent. The structures of the new coumarin derivatives were confirmed by spectral analysis and the liquid crystalline property was established by polarizing optical microscope and by differential scanning calorimetric techniques. The diethyl amine and morpholine were taken as electron-donating and –CF3 as electron-withdrawing groups at the seventh position of the coumarin-3-carboxylic acids to check the mesomorphic property in all new 4-alkoxyphenyl-coumarin-3-carboxylates. Among them, only 4-alkoxyphenyl-7-triflouromethyl-coumarin-3-carboxylates 7a–g exhibited liquid crystalline SmA phase	en
dc.language.iso	en	en
dc.publisher	Taylor & Francis	en
dc.relation.uri	http://dx.doi.org/10.1080/15421406.2012.704824	en
dc.rights	2013 Taylor & Francis	en
dc.subject	4-Alkoxyphenyl-coumarin-3-carboxylate	en
dc.subject	focal conic texture	en
dc.subject	mesophase	en
dc.title	Synthesis and Liquid crystal property of new fluoro coumarin carboxylates	en
dc.type	Article	en
Appears in Collections:	Research Papers (SCM)

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